/Engine/Source/Editor/MovieSceneTools/Public/MovieSceneToolHelpers.h
Get an actors and possible component parents using sequencer to test for attachments.
static void GetActorParentsWithAttachments ( [ISequencer](API\Editor\Sequencer\ISequencer) * Sequencer, const [FActorForWorldTransforms](API\Runtime\MovieScene\FActorForWorldTransforms) & Actor, [TArray](API\Runtime\Core\Containers\TArray)< [FActorForWorldTransforms](API\Runtime\MovieScene\FActorForWorldTransforms) > & OutParentActors )